A PCI master box has a standard I/O module, a DVD/CD-ROM drive and a floppy drive as shown in Figure 2–19. PCI expansion boxes provide additional slots for options. Each PCI power supply has three LEDs: Vaux OK, Power OK, and Swap OK.

BA54A-AA PCI Box

The BA54A-AA PCI box is a PCI master box. It contains the following components:

Backplane with a standard I/O module

Thirteen I/O option slots

DVD/CD-ROM drive

SCSI disk drive

Floppy drive

Ports: one local terminal port, one serial port, one modem port, one parallel port, two USB ports, one keyboard port, one mouse port, one CSB port, and one control panel port

Two I/O riser slots

Two power supplies

BA54A-BA PCI Box

The BA54A-BA box is a PCI expansion box and contains the following components:

Backplane with fourteen option slots

Two I/O riser slots

Two power supplies

GS160/320 System Overview 2-27

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Compaq GS80, GS160, GS320 manual BA54A-AA PCI Box, BA54A-BA PCI Box